The mammoth tusk that was uncovered in Seattle's South Lake Union neighborhood in February finally has a name - LuLu the Lucky Lake Union Mammoth.

The name is a combination of two names submitted in a naming contest launched by the Burke Museum. Lucky was submitted by 8-year-old Zoe, who says the tusk was a "lucky find," and LU was submitted by resident Claudia, as it was found near Lake Union.

LuLu is part of a new exhibit at the museum called "Imagine That: Surprise Stories and Amazing Objects from the Burke Museum," which opens Saturday and runs through October 26.

The tusk is believed to be of a Columbian mammoth. It measured at 8.5 feet long when it was pulled out of the construction pit on Feb. 14. The tusk, which was about 30 feet below street level, is between 20,000 and 60,000 years old.

Scientists don't know the gender of the mammoth that lost its tusk, which is large for the Seattle collection, but not so large that it definitely came from a male. Mammoth tusks can measure as long as 15 feet. They believe it was the left tusk because of its curve.